RMCC - UI error message

you can follow the following steps if you are installing the application for the 1st time and you didn’t change the default passwords

Alarm Information

the most of the time you will get an error message that "UI error" , "UI can't communicate with the core app"

Handling Process

After you install the Vswitch & Resource Manager and then you can't open the application you receive an error message "UI error message".
To solve this problem.
1-You must install the Database of the Switch manager before installing the switch manager application. & it's the same for RM.
2-Make Sure that the following services are started.
[Resource Manager , Switch Center, Switch center VRRP , Switch Manager] and if it was already started ,you have to restart it.
3-Connect to the DataBase using the [sa]account. And make sour that you can connect to the DB correctly.
4-Access the Switch manager application using the following default setting.
User:admin
Password: [no password]
Host: the IP address of your machine.

Root Cause

sometimes the DataBase is not exists , the services are not started or the application can't access the DataBase.

Suggestions

you have to follow the steps with the default password to finalize the installation. After that you can change the default password for security.